33989836 has 12 divisors (see below), whose sum is σ = 60748128. Its totient is φ = 16633232.

The previous prime is 33989831. The next prime is 33989843. The reversal of 33989836 is 63898933.

It is a self number, because there is not a number n which added to its sum of digits gives 33989836.

It is not an unprimeable number, because it can be changed into a prime (33989831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90211 + ... + 90586.

It is an arithmetic number, because the mean of its divisors is an integer number (5062344).

Almost surely, 2^33989836 is an apocalyptic number.

It is an amenable number.

33989836 is a deficient number, since it is larger than the sum of its proper divisors (26758292).

33989836 is a wasteful number, since it uses less digits than its factorization.

33989836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180848 (or 180846 counting only the distinct ones).

The product of its digits is 839808, while the sum is 49.

The square root of 33989836 is about 5830.0802738899. The cubic root of 33989836 is about 323.9288951317.

The spelling of 33989836 in words is "thirty-three million, nine hundred eighty-nine thousand, eight hundred thirty-six".